The 32-year-old has yet to make an appearance under Mourinho, who has told the former Bayern Munich star it will be "very difficult" to give him any playing time this season.

Schweinsteiger has been named in United's Premier League squad but he will be ineligible to play in Europe after being excluded from the 27-man list submitted to UEFA.

The German had stated on the eve of his 121st and final international appearance for Germany on Tuesday that it was still his "absolute dream" to help United this season.

Teenage defenders Timothy Fosu-Mensah and Axel Tuanzebe, who has yet to make his first-team debut, were included in the United squad published on UEFA's website for the group stage, which Mourinho's men begin with a trip to Feyenoord on September 15.